Combination stop mechanism for organs



192A 2 sheetssheez 2 March 22,1927.

C. N. DEVERALL COMBINATION STOP MECHANISM FOR ORGANS Filed Aug. 23

Char Zar Patented Mar. 22, 1927.

Unirse STATES BEST AVAILABLE COP\ .PATENT OFFICE.

CHARLES N. NEVER-ALL OF BUFFALO, NEW YORK, ASSIGNOR TO THE RUDOLPH WUR- LITZIEL MANUFACTURING COMPANY, OF NORTH TONAWANDA, NEW YORK, A COR- APQRA'IJION OF NEW YORK.

COMBINATION .STOP MECHAN ISM FOR GRGANS.

This invention relates igefmerailly to 'musical instruments and more particularly to electno-pneumatically operated organs such vns fare .used-.inn theatres and similar places. A Its principal A:object 'is to provide novel andreliabie means ffor automatically setting and di'enenttcombinations of stop keys withoutitheorganist leaving-the organ bencli.

Anotlselwobject-of'tle invention is eto provide an -eciefnt switch .mechanism .for lcontrolling itlae fcircaiits governing .the selection of diiierent combinations of stop keys.

A xfurtzher .object tis .provision of ..a simipie :andneliable adjustable combination or selective board ttior automatic-ally controllimgfthe movements @t tile stop keys.

"ilhewinvcntionffnrtiner consists in certain improvements and combination of parts heneinadtcrimoie fullyrdcscribed and pointed out-inthe :appended claims.

ln the accompanying drawings:

Figure 1 is a' diagrammatic view of the stop mechanism embodying -my improvements. Figureis a 'fragmentary face view of fthe-master switch mechanism 'controlling the :circuits governing the selection vof 'differont combinations ofrstop keys. Figure 3 is a.

imnsvlase werticall section thereof lon iine 3--f,1Fig.-2. "Figure 4 is -a transverse vertical .section of the combination board and associated parts. Figure 5 is a vertical scction thereof on line 5 5, Figure 4. Y Figure 6 lis a 'inmvizontai :section on line 6-6, Fig. 4. Figure f7 is a 'fragmentary View, similar to Fig. showifng the parts in a. different position.

Sian-iler. characters 4of reference indicate correspon-ding parts throughout the several views.

Organs of fthe 'type to which vmy present improvements are applicable, are usually provided adjacent the keys o1 each manual iwith a plurality of so-calied combination pistons which function to draw, by pressing anyone of them, a certain combination ot stop keys-simnttaneously without-the neccssity of drawing each one individually. Associated with eachset or rouT of combina.- tion pistons is a master piston which is pressed simultaneously with the act of drawing 'the individual stop keys desired 1n a givencombinaticn .and pressing vthe combination piston to which they are to be invarm is a pair of motor eluded. After thus setting Athe desired stop keys to becoupled with a particular combination piston, 'the latter land the master piSto-nV-are released and .the drawn stop keysare returned -to their ,initial undra. position Thereafter, every time this particular combination .piston is pressed, the :corresponding combination of Vstop keys is automatically drawn.

In its general organization, 'this invention comprises four distinct actions, namely, (1,) the bolster motors or Apneuma-t-ics and the on and ofi' .machine which directly operate the sto-p keys, (2) fthe combination machine, (3) the reversing or master switchboard, and (i) the adjustable combination or selective board; The arrangement of the bolster pnenina-tics,thc fand ott machine and the combination machine is ithe :same as on organs now in use, wherein the various combinations of stop keys are adjusted by hand at a distance from the organ bench. The novel features-of ttieprcsent invention reside in tire construction land arrangement of the rei/'ersing switch board and the adjustable combination boa-rd which afford the selecvtion ot' the d-iterent combinations of stop keys desired directly from the organ bench.

Referring now to the drawings, particula-rly Fig. l, 10 indicates a stop Akey pivoted to a t'nlcrum pin or rod ll and having a spring in -engagementthcrcivi th for maintaining it in either its-operative or inoperative position. A rearwardly Aexten-ding metallic arm 13 on this key is adapted to connect the contacts 14, 15 when Athe key is in its drawn or opera-tive position. In such position, an electric-circuit is closed which operates the stop mechanism that the key controls in the usual Way.

Mounted on vthe -boflster 1G of the organ for operative engagement with the stop :key pneumatics 17, 18, one being designated the on pneumatic which, when inflated draws the stop key to its operative position, while the other is designated the ott pneu-matic and acts, when inflated, to vreturn said key to its inoperative position. As shown in Fig. l, these pneumatics may be disposed one behind the other, the movable board of the on pneumatic underlying the arm 13 of the stop key and the corresponding board of the oft pneumatic having an extension 19 overhanging said -armw` The on.and off pneumatics are connected by conduits 20 and 21, respectively, to what is termed the on and oimachine which may be of any suitable and'wellknown construction. That shown in the drawings,`for example, comprises an action box 22 having two separate wind chests 23, 23, eachcontaining an elec, tro-magnet 24 controlling a disk-valve 25 that supplies air fromathe. corresponding wind chest through a passage 26 to a pneumatic 27, which -in'v turn'actuates a valve 28 that controls thev supply 'of-air from 'fsaid wind chest throughaJ passage 29 leading to` the corresponding conduits 20, 21, connected to the on and off pneumatics. The energiz-A ing of either electro-magnet 24 causes the iniation of the corresponding motor pneumatic,

17 or 18 withthe resultthat'the stop key isv likewise moved in one direction or the other to bring into ior out of play the-corresponding stop-ofpipes.I 1'

The combination machine preferably comprises 1an actionbo'x 30 having avv wind chest 31 containing an electro-magnet 32 which controls a disk va1ve r33uthat rsupplies air from said wind chestthrough a passage 34 to a pneumatic 35,-whichin turn actuates a valve 36 controlling the supplyof air from the wind chest through a -passage 37 leading to a pneumatic 38'which is normally .held colla Jsed' by a lspring 39. The movable boar of said: pneumatic 38 carries a metallic bar 40 adapted to bridge contacts 41 applied to a block 42. When the electromagnet 32 is energized, the pneumatic 38 1s iniated, bringing its contact bar into engagement with the contacts '41 and closing an electric circuit for operating the on and of machine.

As before stated, the parts thus far described are in common use on present day organs. The new actions entering into the present invention consist ofthe reversible or master control switch and the adjustable combination board which parts function to control the on and off machine and the combination machine in order to automatically effect the selection of the stop keys desired without leaving the organ bench. The preferred form of switch shown in Figs. 2 and 3, consists of an upright board 43 provided on its face with a plurality of sets of bronze Contact strips 44, 44a arranged in parallel relation and suitably insulated from one another. At its upper end, this board is provided with a transverse spreader rail 45 having a plurality of sets of terminals 46, 46a corresponding in number and in permanent contact with the bronze strips. Each terminal 46 of a set is connected by a wire 47 to one of the fixed contacts 48 of a combination piston 49, whose function is that of a switch, while each terminal 46a is connected by a wire 50 with the contact 14 with which the arm 13 of the corresponding stop key is adapted to engage, the companion contact 15 being connected by a feed wire 51 with a generator 52 or other suitablesource of electrical energy. Thel-fotherlcontact 48 of the combination .y pistonfis connectedfby a wire 53 joined to a wire 51 'leading t'the 4-generator. It will-.thus be understood that the terminals 46 correspond in number to the combination pistons employed on the organ, while the terminals 46a correspond in number to the stop keys used. v

AMovable alternately into-and out of en gagement with-the bronze contactstrips 44,l

44, are upper and-lower switchheads 54, 55 which are mounted on horizontal -fulcrum pms 56,-56 supported at their ends iii-.suitable bearing blocks 57 securedto the front side of r lthe switchboard 43. These switch-heads are switch-heads corresponding in number -to said strips. As shown in Figs. 2-and 3, those ends of the contact wires which engage the strips 44, 44.are -free to. pass loosely through slots 61 in the respective switch-heads, thereby permitting saidv .wires toyield more Yor less and insuring goodfelect-rical contact with the bronze strips.- The lower'switchiead has va rearwardly extending actuating arm 62 to which a .springg63 is applied for.

normally holding the lower switch-head in its on position and the upper-switch-head in its of position, as shown by full lines in the drawings, particularly Fig. 3. In this normal position of the switch, it functions to` complete an electric circuit' for controlling the on and oil `machine, while in the other position thereof, it serves tocomplete an electric circuit for controlling the adjustable combination board, as will hereinafter be described.

This reversi-ble or. master switch is electro-pneumatically controlled, and to this end an action is provided including a wind chest 64 containing an electro-magnet 65 which operates adisk valve 66 that supplies air from said wind chest through a passage 67 to a pneumatic 68, which in turn actuates a valve 69 controlling the supply of air from the wind chest through a passage 70 leading to4 'a pneumatic 7l connected by an upright rod 72 with the actuating arm 62 of the lower switch-head.' The energizing of the electro-magnet 65y results in the infiation of the pneumatic 71 which acts to rock the snip lower :switch-head 155 lto its oii' position and the upper switch-head to its on position. llhe fcircuit, :including this magnet is controlled thy ya. master piston 73, which nots-.1s al switch, one .fof the vterminals 73 thereofheing connected by a wire 74 Vto one of'thermegnet-coils, while Athe `other terminal is "joined vby a branch-wire .75 vwith the feed wire :51 ieading to 'the generator 52, the

other vmagneecoil being connected :by a :re-

turn wire 76 with 4the opposite .side of the genemmr. ihus, fwhenthe master piston-is pressed, the including the electromagnet-165 'is .closed and the master switch is proper direction to bring its Stippel-head :into contactwith the vbron-ze strips 44, 44 and .its lower lead out of contact with such strips.

In nunmal .position of :the reversible switch, wherein theeontaet wires "60, of the'lower'switeh-head are in contactwith tlm-bronze strips 44, 44", two separate circuits are established, one including the stop key amdfthe stopaction, which'latter has not been deemed meeessaryfto show inthe drawings, which lis of any sui-table and well known construction, and the other includinghefcombinaon fp-iston '49 and the electroemagnet 532 'of 'the lt'einbinatien machine. orlthlsf purpose, Leach of the lower switchhead 60 hesccnnected thereto a wire 77 which deeds to 'one of the coils of the electro-magnet s32, the othercoil being conneeted by-n branch wire 78 with the return `76oi1egeneraton while each of the companion contact wires=60a is connected by a wire 79 with 'one of the coiis ofthe electrcemagnet 7-9fof the stop action, the other coi 'being connected by a branch wire 79 `with lsaid--generator `return wire. When the stop key f1@ is depressed or drawn to the position 'shown-by dotted lines in Fig. 1, the corresponding stop of pipesl eonnectcd'therewthis brought into play, the circuit established"including the-stop arm 13, contact 14, wire 50, terminal 46 on the spreader rail 45, brenne strips 44a, contact wire 60a on the @lower `switch-head 55, wire 7 9 to the stop action magnet 79a, Ithence to the return 'wire 776, generator 52 and feed wire 51 to thecompenion-contact 15. When the combination ist-on 49 is pressed, the combination 'machine vis brought into action, the circuites'tabli-shed including one of the con- *t-actsf, wire '47, spreader rail Contact 46, bronze strip-44, contact wire 60 on the lower switch-heed, Wire 7-7, electro-magnet 32, wire 78, return 'Wire 76 to the generator 52 and thence over the feed wire 51, and branch Hwire 53 to the companion piston-contact 48. This willcause'the pneumatic 38 of the combination machine to be inflated7 bringing itsbar'li intoien ement with the contacts 41, herebyfestab' 'shing another circuit for operating 'the on and 01T machine through BEST AVAILABLE COP\ the medium of the so-called adjustable combination board to be presently described.

In its preferred construction, Shown in Figs. 1, 4, 5, '6 and 7, this combination board comprises a plurality of vertically switch levers 80 fulcru-med at 81 in a suitable `iframe y82 and arranged in horizontal rows, there being as many rows as there are combination pistons on a given-sized organ and Ias many switches in each row as there are stop keys. In other words, if there are ten stop keys and iive combination pistons, there `would be live switch levers arranged vertically lone above the other for each stop key, or iity in all. As shown in F ig. `5, the rows of switch levers are provided at one side thereof with indicators or numerals 83 which correspond to vthose on the combination pistons, while above the switch arms in line with @the columns thereof are identifying characters 84 corresponding to those on the stop keys. This `arrangement merely affords an identifying system of associating the different switch levers with their 'correspending stop keys and combination pistons. Each switch .lever 80 carries a forwardly projecting metallic arm 8Oa which is electrically connected by a wire 85 with one of the :block-contacts 41 of the combination machine and which is adapted to engage one or the other ot a set of on7 and oii77 conta-ets 86, 87, respectively. A spring 88 applied to the switch lever acts to maintain it in one position or the other in substantially the saine mann-er as the stop key 10 is held. The on switch contact 8G is connected by a wire-89 with the magnet 24 controlling the corresponding on pneumatic 17 of theon and cti machine, while the ott switch contact 87 is connected by a wire v9() with lthe other magnet 24 controlling' the corresponding oif pneumatic 18 of said machine. Vhen the switch lever is moved to its on position, the corresponding pneumatic 17 is inflated to move the stop key to its drawn position and when said switch lever is moved to its off position, the corresponding pneumatic 18 is inflated to return the key to its initial position.

Adapted for operative engagement with cach switch 'lever 80, whereby the same is shifted to one position or the other, is an actuating member consisting of verticallyL swinging push rod 91 fulcrumed at 92 to a guide head or carrier '93 arranged for horizontal movement in a guideway 94 formed in a support 95 disposed in the rear of the switch-frame 82. Each push rod is located directly in rear of its companion switch lever and is adapted to engage the rear end of the same above or below the axis of its fulcrum 81. In order to bring the push rods of each column to their proper position above or below the pivotal axis of the corresponding switch levers, a plurality of verswinging ISG tically-movable selector bars 96 are provided' which are guided' on the front face of the support and' which. contain a; series of openings 97 through which the free-ends of thepush rods extend. 4ft is to be noted that thereare 'as manyselector bars as'there are stop keys andI that there are as many push' rods in a row as there are switches. "Each selector bar is held-'normally inzits lower posit-ion bya spring 98 applied to -the lower end. thereof, while its-upper end terminates ina stop flange 99 adapted to abut against the lower and upper faces of a horizontal groove 100,'formed in a rail 101 secured to the .top of the support 95, for limiting the downward and upward movements of the selector. bar, respectively. In the lowered positionof the latter, the column of push rodsl associatedtherewith act to shift the companion 'switch levers to their off position, as shown by .full lines in Fig. 4, when theguide heads 93 are projected forwardly, while in the v.elevated position of said bar, the push rods assume the proper position to shift suoli switch levers to their .on position, as shown by full lines in Fig. 7, when said'guideheads are actuated.

.Each of.' the guide heads 93 andA selector bars v96 is actuated by electro-pneumatic mechanism controlled by the combination piston 49 and stop key 10, respectively. The mechanism. for actuating the guide-head corresponding to a. given combination piston preferably comprises a wind chest 102 containingl an electromagnet 103 which operates a disk valve 104 that supplies air from the wind chest through a passage 105'to a pneumatic 106, which in turn actuates a valve 107 controlling the supply of air from said wind chest to a passage 108 leading to a pneumatic 109 normally collapsed by a spring 110, said last-named pneumatic being connected to the guide head by links 111, 112, joined to the arms of a bell crank 113 mounted on a rock shaft 114. One coil of this electro-magnet is vconnected by a wire 115 with one of the contact wires 59 on the upper master switch-head 54 which is included in the circuit controlled by the combination 'piston 49, while the other coil is connected by a branch wire 116 with the return wire 76 leading to the generator. Thus, when the master piston 7 3 is pressed to bring the upper head of the master switch into operation and the combination piston is likewise pressed, the proper circuit is established to cause the inflation of the pneumatic 109 which functions to rock the bell crank 113 and project the corresponding guide head 93 to bring its push rods into play for moving the companion switch levers 80 to their on or 0E position, if they are not already in one or the other of such positions. Should the switch levers, at the time, be in a position to which the push rods would otherwise move them, vthey will rofcourse r- 9 main `in such. position.- v '1 v S- The mechanism for actuating bars 96, whereby'the selection of the .particular stop'keys is automatically effected with- 'slector out` leaving the -organ bench,comprisesi af-l wind chest v117- containing .an lelectro-magnet 118 which operates -a disk valve- .119 .that

supplies air from the fwindr chest throughra'f passage 120 to a Vpneumaticlzl2l, .whichturn actuates` a-valve .122' contrellin'g the supply of air fromsaid wind chest to affpaS-. sage 123 leadingto-a. pneumaticf124kcon-V l nected by a link 125with the lower end of-l the correspondingV selector bar. This elec-v tro-magnet is included in the circuiticon.-v

trolled' by'the-stop'key 10, .one of its coils'- being connected by a wire 412 .to the corresponding contactwire 59? on the upper reversible switch-head 54,-v the'other coil being connected bya.' branch wire 127 vwith...t he generator return wire-76. Thus, when .themaster piston 73 is pressed to bring the upper head -of the reversible switch into'operation and the desired stop .key is drawn, the

proper circuit is established lto cause -thein-y flation of thepneumatic 124, which acts to elevate the corresponding selector bar and; swing the push rods attached thereto-to the position shown .inFig v7, ready toA be pro-:

jected, -when the combination pistonjis F rom .the foregoing, it will stood, that the function of themastenpisjton 73 is to actuatethe reversible ormaster switch-heads 54, 55 which establish or break.

two separatel and distinct circuits controlled A- by thestop keys and the combinationpistons, each stop key being electro-pneumatically connected with a4 selector bar 96jand each combination piston 49 being similarlyconnected with a row of. push rods 91 which. actuate theswitch levers S0 for cont-rolling the on and off machine.v jIt willv also be understood-that foreach stop key on the console thereare as many `switch leversan d r push rods on the combination board, ar-' ranged one above the other, as there are.

combination pistons. In the diagrammatic arrangement of theinvention shown in Fig..w

1, only one complete unit has beemillus-jf trated for the sake of clearness.' This is,.

a combination' piston is shownv 'connected with a particular push rod 'and companion switch lever, and a singlestop keyis shown controlled by such combination piston, while in practice, a single combination piston may control a plurality of stop keys desired for a given combination.

lows

125y The operation of the mechanism-is as fol'-Av In the ordinary playing ofthe organ, the stop keys may be manually'drawn at will*V in the usual manner. When a stop key =is maken drawn, the-1 stop key aun. 1131 bridges the contacts 1144,. and. an. electric circuit is established. inclluding the wire 50,. spreader terminal 46? and the corresponding bronze strip.4 44",. contant wire.- 60T*L on. the lower switch-lead'. 55J which: is. normally on, Wire 79. to. the stopacti-onf. magnet Z9-2, wire 79", andi-thence over they return-z wire '16', generation 5%, andeed wire 51 to the. contact 15.

.Assume that the stop key together Weth) other"A stopv keys, is to: be coupled tothe combination. piston4 identified. as No. 1,

lita.-upper@switch head` {i4-into Contact therewith-x. Second`f while' holding. the master piston, dmxwf the` stop .keys desired toA be ineluded. inf-the combination'. 'libe drawing of -each:stoprliey" closes a circuit including the wine: v505l spreader terminal 46, strip 44a,

- contact wire 59*L onL the upper switch head,

:md: wine -to--magnct M18, thereby in- 'latmg-the pneuzn'iartio` 1124: and elevating. the corresponding seleetor'bar' 96 together with -tlie'- pnshinods- 9.4 connected. therewith to the pistonshowin by dotted lines ifn Fig. 4, -wheneimthe .tnee'ends of'said' push rodsare .abnveitheI pivotal axes of the companion switehelevers-tlt. Third@ while still holding the master piston, press the particular comlainat'onx piston 49 desired, in: this instance No. 1,. which' establishes circuit including the wire 47,. spreader terminal 456', bronze stripvthcontact wire 59 on the upper switch head-y and; wire@ 1x15'- to the magnet 103l of the combination board?,. thereby inflating the pneumatic 150.9? and: shifting` the row of push -rodscoupled 'therewithto the projected position,.shown in: Fig. 7 rlheV projection ot' those, push'. rodsg. Wl'richl were previously elevated by the; selector bars coupled with' the drawn. stop keys, causes the companion switclr levers; 80r to.' be rocked. downwardly bringing their. metallic arms 80a into engagementv with the: corresponding on contacts 86 off: said switch levers, asishown in Fig. 7. Fountlt, return. the drawn stop' keys to their initial? position. and release the master piston andacombination piston. I'n this way the complete combination is set without the necessity oai the organist leaving his bench and bythe; one operation of pressing the combimatiom piston while the" master piston lsllleld..

Assumonofmthat the organist has reached the place in: his selection where lie wants to throw` intoplay the combination of stops previously' selected.. He simply presses the BEST AVAILABLE COP\ 5 particular combination piston coupled with the desired stop keys andthe latter will be automatically drawn. The pressing of the combination piston. establishes a circuit including the wire 47, spreader terminal 46,. bronzestrips 44, contact wire 60- on the lower switch-head1. 55 which is now in its normal or on position, wire 77 to the magnet 32 of the combination machine, thereby inflating the pneumatic 38 and bringing its metallic bars 40 into engagement with the block-contacts 41, fromwhichA the current passes over wire 85 to the switch arms 80t which are at this time engaged with the on contacts 86. rlhe circuit then continues over wire 89' to the on magnet 24 of the on and oli' machine which becomes-energized, causing' the inflation of the corresponding pneumatic 17 and movi-ng the stopA keysto their drawn position.

Any of the switches 80 which happen. to be in their on position at the time of' setting a given combination of stop keys and which are not supposed to be includedin such combination will be automatically shifted to their ottn position the moment the particular combination piston' is pressed. That is, it certain stop keys are not drawn during the setting of a combination,l their selector bars 96' are likewise4 not actuated andi the moment the combination piston including the chosen stop keys' is pressed the corresponding push rod supporting head. 93t is projected forwardly and those switch. levers 80, which happen to be on, either remainin' suchv position if the corresponding. key has been selected or are shifted to off position', should they not already bein such' position, if their corresponding stop keys have not been selected.

lVhen it is desired to set alli the switch levers 80' of the combination board. in their oli positions, it is merely a matter of putting all the stop keys up, pressi-ng the master piston 73, and all thecombination pis tons 49. This will place the adjustable combination mechanism in correct position for making new selections or combinati-ons.

I claim as my invention 1. In an electro-pneumatic organ, 'the combination of a plurality of stop keys, actuating devices for moving them to their on and oli positions, a combination mechanism arranged for connection with said actuating devices for controlling desired stop-combinations, an electric circuit including said actuating devices and said combination mechanism and selecting switches in said circuit for coupling said combination mechanism with said actuating devices, said selectingl switches being controllable from the organ bench' and governing the stop key actuating' devices;

2. In. any electropneumatic organ, the

means controlled from the organ bench for operatingv said shift-able switch members.

3. In an electro-pneumatic organ, the

combination of a plurality of stop keys, ac-

tuating devices for moving them to their "on and olf positions, a combination mechanism connected with said actuating devices, a plurality of-felectric vcircuits including the actuating devices and the combination mechanism, Aswitches in said circuits movable to on and off positions :tor governing the corresponding movement ofthe stop-keys, and means controllable from the organ bench and independent of said actuating Idevices'and said 'combination mechanism for automatically operating said switches.

4. In an organ, the combination of a plurality of stop keys,-actuating devices for moving them 'to their on and oli positions, a `combinationmechanism arranged for connection with said actuatingdevices for controlling desired stop-combinations, shiftable means vvconnecting said combination mechanism with said actuating devices for governing the latter, and means operated from the organ bench and under the control of the combination mechanism and the stop keys for operating said shiftable means.

5. In an electro-pneumatic organ, the combination of a plurality of stop keys, actuating devices for moving them to their on and off positions, adjustable mechanism operatively connected to said actuating devices for selectively controlling the movement of a predetermined combination of stop keys, a combination piston controlling the stop key actuating devices, and automatic means under the control of the stop keys and said combination piston for setting the adjustable mechanism to effect the simultaneous drawing of such stop key combination when said piston is operated.

6. In an electro-pneumatic organ, the combination of a plurality of stop keys. actuating devices for moving them to their on7 and ofi positions, shiftable members controlling said actuating devices, a combination mechanism connected with the stop key actuating devices through said shittable members, a combination piston for said mechanism, means for actuating said shift- BEST AVAlLABLE COP.

able members, and a :ma-ster control device connected with said vstop keys and said combination piston for( governing-the actuating means 'of said sliiftable members.

7. In an electio-pneumatic organ',tl1e com-.-

bination of a-plurality of stop keys, actuating devices for moving them to their on and offpositions, shiftable members controlling said actuating devices, Aa combination mechanism connected with the stop' key-f actuating devices through said shiftablc members, a combination pistonA for` said mechanism, means for actuating saidshiftable members, a master control device for governing said actuating means, said device f being connected to said stop keys and said combination piston, and a master piston connected withV said control device for actuat- 8. In an electro-pneumatic organ, the conibination of a plurality of stopkeys, actuatmg devices for moving them to their on and oiii positions, a combination-lmechanism connected with said'actuating devices,

a plurality of electric circuits including the latter and said combination mechanism, shiftable members forming parts of said circuits for selectively controlling the movement of a predetermined combination of stop keys, a combination; piston adapted to close said circuits for rendering the-stop key actuating devices operative, means for actun ating said shiftable members, Vand anfelectrical control device for said actuating means connected to said stop keys and saidi" combination piston. Y

9. In an electro-pneumatic organ,'the.com bination of a plurality of stopv keys, actuating devices for moving themto their on and oil positions,.a'combination mechanism connected with said actuating devices, a plurality of electric circuits including-the latter and said combination mechanism, shiftable members forming'parts o'frsaid circuits for selectively controlling the movecircuits, one of the switches being' on when the other is off and vice versa.

10. In a combination stop mechanism for musical instruments, the combination of a plurality of stop keys, actuating devicesfor moving them to their on. and off positions, a combination mechanism connected with said actuating devices, a combination piston, an electrical circuit including each of the aforesaid elements, switch arms in said .roeren J .crtrolliiugisaiid master switch, the letter bemg conmxucted to.' control the 'iiiz'st-4 .andi seconds-immed: circuits, respectively.

llc Imi a. combination stropl mechmxlisinv for "20.-mnsicxli instruments, the: combination ort? a of stopv keys, actuating devices tor muvingithem; to their' on and mir positions,J a: combination mechanism connected actuating devices, a. combination *zwpistonwaim electriml circuit moludilng each Doff tlf aforesaid. elements, switch arms in said: circuit netmeeting! the: stopl key' actuating devices' with the cxrhinazioni mechanism for selectively controlling: thev movement. ot

"een: predetermined eombimatiom ot stop keys,

elentnicnlioperated, mechanism for actufswitch arms, a.: second. electrical cimutf-'cmnectmg' saida mechanism with the "stop keys-md the; combinations piston, and ai switch for separately controlling said .amb second-named circuitsg. said) switch inclmdimgtwo'fswitch-heds azltern-ately movstblej .to one or' the"v other: of.' two` operative positions, one: switch-head controlling the circuit including? the' stop keys, combination meehanisnn. combination; pistone and stop` key actuating devices, and: the' other switch-head eomnzollinor the circuit including the stop keys,` emrbirmtionr piston,` and: switch-arm aaetutingr mechanism..

1%.1111- an orgrun, thel combination of a plurality" of stop'keys; actuating devices for moving them totheir' on and oii' positions, controlling.I means for' said actuating devices,D andl mechanism controllable from the orgain'beneh for operating said controllingA means. to tl1ei-r"on? and'. Cif positions, said.1neohanism including movable members arranged; to engage said' controlling means for moving them to one position or the other, aznd selecting means. connected with said` movable: members for setting them in a predeterminedl position preparatory to ctfecting their operative' movement.

13'. In( anorgan, the combination. ont a plural-ity' of stop keys, actuating devices for moving them to their on and oiiT positions, shiitable members movable to one or the other' of two positions for controlling said: actuating devices,` adjustable means. co-

BEST AVAILABLE COP\. '7

operating with said Shiftable members for governing their movement, and selecting means controlled byV the stopl keys for actuafting said adjustable means.

1d. In an organ, the combination oi' :L plurality of stop keys, actuating devices tor moving them to their "oni"t and oil positions, rock levers movable to one or the other of tivo positions for controlling said actuating devices, push rods arranged to engage Said levers either above or belothe pivotal axes thereof for rocking.' them in one direction or the other, and selector bars connected with said push rods for moving them, in one or' the other of such positions relative to said rock levers.

15. In an electro-pneumatic organ, the combination o'l" a; plurality ol stop keys, touting devices for mov-ing them to their on and oli positions, a combination mechunism connected with said; actuating devices i'or controlling desired stop combinations, a piston for controlling said combination mechanism, an electricall circuit including the aforesaid elements, a plurality of switcharms in said circuit governing said actuating devices, and adjustable mechanism controlled from the organ bench for operating said switch arms, comprising p-usb rods :rrranged to engage said switch arms for: moving them to their on or oit positions, means in said circuit and controlled by said combination' piston. for actu-ating. said push rods, selecting members connectedwith said push rods for setting them in position preparatory to being actuated, and means. in said circuit and controlled the stopv keys for actuating. said selecting members.

lo'. In an electro-pneumatic organ, the

combination of a plurality of stopv eys, ac-

tuating devices or moving theml to their on and oli positions, a combinaation mechanism connected with said' actuating devices for controlling desired stop-combinations, a piston for controlling swid'- com-- bination mechanism, an electrical circuit including the aforesaid elements, a plurality of pivoted switch arms in said circuit governing said actuating devices. and adjustable mechanism controlled from the organ benclr for operating said switch arms, comprising push rods arranged in rear ci said' switch arms for engagement therewith', said rods being' iulcrumed for movement in the plaine of the switch arms for brine-ing their' ends opposite the latter' on one side or the' other of their pivots, a plurality of shittable selector bars disposed between' said switch arms and said push rods and connected with the latter for adjusting them to one position or the other, and means: in said circuit and controlled by the combination piston and the stop keys for actuating said: push rods and said selector bars, respectively.

l?. in ane electro-pneumatic organ, the

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combination of a plurality of stop keys, actuating devices for moving them to their on and oil positions, a combination mechanism connected with said actuat-ing devices for controlling desired stop-combinations, a piston for controlling` said combin-ation mechanism, an electrical circuit including the aforesaid elements, a row of pivoted switch arms in said circuit governing said actuating devices, and adjustable mechanism controlled from the organ bench ror operating said switch arms, comprising a cross head arranged in rear or' and guided v for movement toward and from said row of switch arms, rods fulcrumed on said cross 'head for engagement with the switch arms on one side or the other of their` axes whereby. they are moved to their corresponding on7 or. oli positions, the switch arms and rods in such row corresponding` in .uumber to the stop keys, a plurality of shii'table selector bars interposed between the switch arms and the cross head and constituting guides for said push rods for moving the latter to one position or the other, and means in said circuit and controlled by the combination piston and the'stop keys for actuating said cross head and said selector bars respectively.

18. In l an electro-pneumatic organ, .the combination of a plurality of stop keys, actuating devices for moving them to their on and ott positions, a combination mechanism connected with said actuating devices for controlling desired stop-combinations, a plurality of combination pistons for said mechanism, a plurality of electrical circuits including the aforesaid elements, a plurality of rows of switch arms in said circuits for governing said actuating devices, there being as many rows of switch arms as there are combination pistons and as many switch arms in each row as there are stop keys, means for engaging the switch arms of a row for shifting them to their on or olf positions, means in said circuits and controlled by the combination pistons for actuating said shifting means, a plurality of selecting devices each operatively connected to a column of said switch armshifting means for setting the'latter in a predetermined position, and means in said circuits and controlled by the stop keys for actuating said selecting devices.

19. In an electro-pneumatic organ, the combination of a plurality of stop keys, actuating devices for moving them to their on and off positions, a combination mechanism connected with said actuating devices for controlling desired stop-combinations, a plurality of combination pistons for said mechanism, a plurality of electrical circuits including the aforesaid elen'ients, a plurality of rows of switch arms in said circuits for governing said actuating devices,

there being as many rows ofswitch arms as there are combination pistons and as many switch arms in each row as there are stop keys, cross heads arranged in rows opposite the corresponding rows of vswitch arms, shiftable rods carried by said cross heads and adapted for engagement with .the-corresponding row of switch arms for moving them to their on or off positions, means in said circuits and controlled bythecombination pistons for actuating said cross heads and their rods toward and fromsaid switch arms, a plurality of parallel selector bars, one for each stop key, each operatively connected with one ofthe shiftable rods ot' a row, and means in said circuits and controlled by the stop keys for actuating said selector bals.

20. In an electro-pneumatic organ, the

combination of a plurality of stopkeys,

actuating devices for moving theml to .their on and ott positions, a combination mechanism connected with said actuating devices for controlling -desired stop-combinations, a plurality of combination pistonsfor said mechanism, a plurality of electrical circuits including the aforesaid elements and each separately controlled by the vstop keys and the combination pistons, a plurality'of rows of switch arms for governing said ac-l tuating devices included in the circuits of said combination pistons, selecting devices for controlling the setting and movement of said switch arms to their on `or olf positions, said selecting devices lbeing included in both the stop key and combination piston circuits, and a master control switch in said circuits for rendering the stop key and combination piston circuits both operative in one position thereof, and for rendering only the combination piston circuits operative in its other position.

21. In an electro-pneumatic organ, -the combination of a plurality of stop keys, a'csaid mechanism, a plurality of electrical'cir` cuits including the aforesaid-elements and each separately controlled by the stop keys and the combination pistons, a plurality of rows of switch arms for governing said actua-tingdevices included in the circuits of said combination pistons, selecting devices for controlling the setting and movement of said switch arms to their on or ott positions, said selecting devices being included in both the stop key and combination piston circuits, a master control switch in said circuits for rendering the stop key and combination piston circuits both operative in one position thereof, and for rendering only the combination piston circuits operative in its other posituating devices for moving them to their CFI tion, and electro-pneumatic means or 0perating said master switch, said switch being normally in position for rendering the combination piston circuits operative.

22. In an electro-pneumatic organ, the combination of a plurality of stop keys, actuating devices for moving them to their on7 and ofi positions, a combination mechanism connected with said actuating` devices for controlling desired stop-combinations, a plurality of combination pistons for said mechanism, a plurality of electrical circuits including the aforesaid elements and each sepa 'ately controlled by the stop keys and the combination pistons, a plurality ot rows of switch arms for governing said actuating devices included in the circuits ot said combination pistons, selecting devices for controllingr the setting and movement of said switch arms to their on or off positions, said selecting devices being included in both the stop key and combination piston circuits, a master control switch in said circuits for rendering the stop key and combination piston circuits both operative in one position thereof, and for rendering only the combination piston circuits operative in its other position, said master switch including two sets of fixed contacts connected to the stop keys and combination pistons, respectively, and two switch-heads alternately movable into and out of engagement with said fixed contacts, said switch heads having corresponding sets of contacts, the contacts of one switch-head being electrically connected to the organ stops and to the combination mechanism, and the contacts of the other switch-head being electricallyconnected to the selecting devices.

23. In an electro-pneumatic organ, the combination of a plurality of stop keys, actuating devices for moving them to their on and 0H positions, a combination mechanism connected with said actuating devices for controlling desired stop-combinations, a plurality of combination pistons for said mechanism, a. plurality of electrical circuits including the aforesaid elements and each separately controlled by the stop keys and the combination pistons, a plurality of rows of switch arms for governing said actuating devices included in the circuits of said combination pistons, operating members for moving the switch arms to their on7 and oit positions, selecting devices for controlling said operating members, said operating members and said selecting devices being included in the circuits oi" the combination pistons and stop keys, respectively, a master switch in said circuits having two sets of fixed contacts connected to the stop keys and combination pistons and two switch-heads operatively connected to each other and alternately movable into and out of engagement with said fixed contacts, said switchheads having` corresponding sets of contacts, the contacts of one switch-head being electrically connected to the organ stops and to the combination mechanism, and the contacts cgt the other switch-head being connected to said switch arm operating members and said selecting devices, and a master piston for controlling the movement o1E said master switch, the latter being normally in position for rendering the combination piston circuits operative.

24. In an electro-pneumatic organ, the combination of a plurality of stop keys, actuating devices for moving them to their on and oit positions, a combination mechanism connected with said actuating devices ;tor controlling` desired stop-combinations, a piston for controlling said combination mechanism, an electrical circuit including the aforesaid elements, a row of pivoted switch arms in said circuit for governing said actuating devices, the rear ends of said switch arms having portions extending above and below their pivotal axes, push rods arranged in rear ot said switch arms tor engagement with their rear portions and capable of adjustment above or below the axes thereof, means in said circuit and controlled by said combination piston for actuating said push rods in a direction to move said switch arms to their on or off positions, selecting means for adjusting said push rods relative to the rear portions of said switch arms, and means in said circuit and controlled by the stop keys for actuating said selecting means.

CHARLES N. DEVERALL. 

